/* ==========================================
   ADEVA - Modern Minimalist E-commerce
   Design System & Variables
   ========================================== */

:root {
    /* Colors - Soft & Elegant Palette */
    --color-primary: #b08a80;
    --color-primary-dark: #8f6f66;
    --color-primary-light: #d4b5ae;
    --color-secondary: #e8dcd4;
    --color-accent: #7a5f57;
    
    --color-bg: #fdfbf9;
    --color-bg-alt: #f5f1ed;
    --color-surface: #ffffff;
    
    --color-text-primary: #2c2420;
    --color-text-secondary: #6b5f58;
    --color-text-muted: #9d9089;
    
    --color-border: #e8dcd4;
    --color-overlay: rgba(44, 36, 32, 0.6);
    
    /* Typography */
    --font-display: 'Cormorant Garamond', serif;
    --font-body: 'Lato', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    
    /* Borders & Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(44, 36, 32, 0.08);
    --shadow-md: 0 4px 16px rgba(44, 36, 32, 0.12);
    --shadow-lg: 0 8px 32px rgba(44, 36, 32, 0.16);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ==========================================
   Reset & Base Styles
   ========================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--color-text-primary);
    background-color: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

/* ==========================================
   Layout & Container
   ========================================== */

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==========================================
   Header & Navigation
   ========================================== */

.header {
    position: sticky;
    top: 0;
    background: rgba(253, 251, 249, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    gap: var(--spacing-md);
}

.logo-img {
    height: 50px;
    width: auto;
    transition: var(--transition-normal);
}

.logo-img:hover {
    transform: scale(1.05);
}

.nav {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    align-items: center;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition-normal);
    transform: translateX(-50%);
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.nav-link.active {
    color: var(--color-primary);
    font-weight: 600;
}

/* ==========================================
   Hero Section
   ========================================== */

.hero {
    position: relative;
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-bg-alt) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(176, 138, 128, 0.1) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(120deg); }
    66% { transform: translate(-20px, 20px) rotate(240deg); }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
    animation: fadeInUp 0.8s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.02em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.3rem);
    color: var(--color-text-secondary);
    font-weight: 300;
    letter-spacing: 0.05em;
}

/* ==========================================
   Main Content
   ========================================== */

.main-content {
    padding: var(--spacing-xl) 0;
    min-height: 60vh;
}

/* ==========================================
   Products Grid - Pinterest Style
   ========================================== */

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Masonry Effect with CSS Grid */
.product-card:nth-child(3n+1) {
    grid-row: span 1;
}

.product-card:nth-child(3n+2) {
    grid-row: span 1;
}

.product-card:nth-child(3n) {
    grid-row: span 1;
}

.product-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    cursor: pointer;
    animation: cardAppear 0.5s ease;
    animation-fill-mode: both;
}

@keyframes cardAppear {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.product-card:nth-child(1) { animation-delay: 0.05s; }
.product-card:nth-child(2) { animation-delay: 0.1s; }
.product-card:nth-child(3) { animation-delay: 0.15s; }
.product-card:nth-child(4) { animation-delay: 0.2s; }
.product-card:nth-child(5) { animation-delay: 0.25s; }
.product-card:nth-child(6) { animation-delay: 0.3s; }

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.product-image-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 100%;
    overflow: hidden;
    background: var(--color-bg-alt);
}

.product-image-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary-light) 100%);
    transition: var(--transition-normal);
}

.product-card:hover .product-image-placeholder {
    transform: scale(1.1);
}

.product-placeholder-icon {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 600;
    color: var(--color-surface);
    opacity: 0.8;
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-normal);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.view-details {
    color: var(--color-surface);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: var(--spacing-xs) var(--spacing-md);
    border: 2px solid var(--color-surface);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.view-details:hover {
    background: var(--color-surface);
    color: var(--color-primary);
}

.product-info {
    padding: var(--spacing-md);
}

.product-category {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.product-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.product-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.product-code {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-family: monospace;
}

.product-price {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-primary);
}

/* ==========================================
   Product Detail Page
   ========================================== */

.product-detail {
    padding: var(--spacing-xl) 0;
}

.detail-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.detail-image-section {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.detail-image-main {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.detail-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary-light) 100%);
}

.detail-placeholder-icon {
    font-family: var(--font-display);
    font-size: 6rem;
    font-weight: 600;
    color: var(--color-surface);
    opacity: 0.8;
}

.detail-info-section {
    animation: fadeInUp 0.8s ease;
}

.detail-breadcrumb {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.detail-breadcrumb a {
    color: var(--color-text-secondary);
    transition: var(--transition-fast);
}

.detail-breadcrumb a:hover {
    color: var(--color-primary);
}

.detail-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.detail-category-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-secondary);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-lg);
}

.detail-price-section {
    padding: var(--spacing-md) 0;
    border-top: 2px solid var(--color-border);
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

.detail-price-main {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    font-family: var(--font-display);
}

.detail-price-gain {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

.detail-specs {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm);
    background: var(--color-bg-alt);
    border-radius: var(--radius-sm);
}

.spec-label {
    font-weight: 600;
    color: var(--color-text-secondary);
}

.spec-value {
    color: var(--color-text-primary);
}

.detail-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

/* ==========================================
   Buttons
   ========================================== */

.btn-primary,
.btn-secondary {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-normal);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    flex: 1;
}

.btn-primary {
    background: var(--color-primary);
    color: var(--color-surface);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-surface);
}

/* ==========================================
   Related Products Section
   ========================================== */

.related-products {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--color-border);
}

.section-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

/* ==========================================
   No Products Message
   ========================================== */

.no-products {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-secondary);
    font-size: 1.2rem;
}

/* ==========================================
   Footer
   ========================================== */

.footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-logo-img {
    height: 40px;
    width: auto;
    opacity: 0.8;
}

.footer-text {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* ==========================================
   Responsive Design
   ========================================== */

@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: var(--spacing-md);
    }
    
    .detail-wrapper {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .detail-image-section {
        position: relative;
        top: 0;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .nav {
        width: 100%;
        justify-content: center;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .hero {
        padding: var(--spacing-lg) 0;
    }
    
    .detail-actions {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-lg: 1.5rem;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    
    .product-placeholder-icon {
        font-size: 2rem;
    }
    
    .product-title {
        font-size: 1.1rem;
    }
}

/* ==========================================
   Loading States & Animations
   ========================================== */

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.loading {
    animation: shimmer 2s infinite;
    background: linear-gradient(
        to right,
        var(--color-bg-alt) 0%,
        var(--color-secondary) 50%,
        var(--color-bg-alt) 100%
    );
    background-size: 1000px 100%;
}

/* ==========================================
   Utility Classes
   ========================================== */

.text-center {
    text-align: center;
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}